Polished Killaloe Opal slab KO113 polished prehnite Dimensions at widest points approximately

Dimensions at widest points approximately 145 mm x 110 mm and 11 mm thick

Approximate dimensions at widest points 110 mm  x 85 mm  x 45 mm thick

It probably grew in shallow water conditions with intermittent subaerial exposure

265 mm x 220 mm x 14 mm thick

Fossil stromatolite  polished on one side with natural weathered exterior

Polished Killaloe Opal slab KO113 polished prehnite Dimensions at widest points approximatelyKO113 Killaloe Opal slab, cut and polished on one side. Dimensions at widest points approximately 275 mm x 150 mm x 18. 8 mm thick Weighs 1,107 grams Killaloe Opal occurs at a location near Norseman in the Eastern Goldfields of Western Australia.